256 EVOLUTION AND PSYCHOLOGY 



field must, ere long, produce the man. Some of 

 us are already convinced that the human soul in 

 all its power is just as much a product of evolu- 

 tion as the body; but our faith needs to add the 

 knowledge that can only come when all the au- 

 thentic data are properly grouped. That the 

 impending synthesis must be genetic, not in the 

 prolix and platitudinous sense of Spencer, but 

 with concrete facts as warp and woof, is inevita- 

 ble if the psychology of the future is to correlate 

 the facts of instinct, of daily human life with all 

 its hot and intense impiilses and all its morbid 

 manifestations, and so become the Bible of the 

 soul of man, in a sense our current, fragmentary 

 systems do not dream of — this seems to me to be 

 self-evident. 



RUDIMENTARY PSYCHOSES 



The signs and foregleams of such a recon- 

 struction and transvolution are already many. 

 In abnormal psychology, devolution is a rubric 

 of increasing dominance. The Jacksonian the- 

 ory of epilepsy brings in the genetic perspective 

 in its conceptions of higher and lower levels. 

 The studies of sex perversions are replete with 

 references to the past history of the race, and 

 some of them can be explained only as reversions, 

 as in the case of the impulsions to nudity and ex- 

 hibitionism. Many of the psychic facts in hu- 

 man courtship point directly to that of animals. 

 Some of the laws of the long-circuiting of the 



